YIT CORPORATION STOCK EXCHANGE RELEASE 20 NOV 2008 at 9:30 YIT CORPORATION BEGINS THE PURCHASE OF THE COMPANY'S OWN SHARES The Board of Directors of YIT Corporation has decided to use the authorisation granted by the Extraordinary General Meeting of the YIT Corporation on October 6, 2008, to purchase a maximum of 12,722,342 company shares, purchased with the company's unrestricted equity. The maximum number equals 10% of the company's shares. The own shares may be purchased to develop the company's capital structure, to be used as consideration in possible acquisitions or when the company purchases business assets, or to fund or implement other arrangements, or to be disposed of in public trading on the NASDAQ OMX Helsinki Ltd or annulled. The shares will be purchased in disproportion to shareholders' holdings. They will be purchased in public trading on the NASDAQ OMX Helsinki Ltd and at their market value at the time of purchase. The purchases of the shares start at the earliest on November 28, 2008. The authorization is valid for 18 months from the decision of the Extraordinary General Meeting. YIT Corporation does not hold any shares at the moment. For additional information, contact: Antero Saarilahti, Senior Vice President, Administration, +358 20 433 2280, antero.saarilahti@yit.fi Sakari Ahdekivi, Chief Financial Officer, +358 20 433 2258, sakari.ahdekivi@yit.fi YIT CORPORATION Juha Kostiainen Senior Vice President, Corporate Communications and Business Development Distribution: NASDAQ OMX, principal media, www.yitgroup.com YIT is a successful European service company in building systems, construction services and services for industry. We build, develop and maintain quality living environments in Nordic countries, Russia, Baltic countries and Central Europe. In 2007, YIT's revenue amounted to EUR 3.7 billion. YIT's share is listed on NASDAQ OMX Helsinki Ltd. www.yitgroup.com